An alternative or a good addition to FxCop would be to use the commercial NDepend tool. Using this tool, you can write a code rule over LINQ queries (namely, CQLinq) . Disclaimer: I am one of the developers of this tool
By default, more than 200 code rules are offered, including design, architecture, code quality, code evolution, naming conventions, error code, Using .NET Fx ...
CQLinq is designed to write code rules that can be checked live in Visual Studio or can be checked during the build process and reported in the HTML / javascript report .
The power of CQLinq over FxCop is that it is easy to write / configure / share a code rule and get immediate results. Tools are provided for viewing consistent code elements. Specifically, it looks like this:

Patrick from NDepend team
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